:root{--primary:#26A9E0;--secondary:#FFFFFF;--login-color:#EA7C07;--bg-color:#FFFFFF;--black:#000000;--header-offset:122px}*{box-sizing:border-box;margin:0;padding:0}body{padding-top:var(--header-offset);font-family:'Segoe UI',Roboto,Helvetica,Arial,sans-serif;overflow-x:hidden}.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;box-shadow:0 4px 20px rgba(0,0,0,.15)}.header-top{background:#1a2b3c;width:100%}.header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:0 30px;min-height:68px}.logo{display:inline-block;font-size:2rem;font-weight:900;color:#fff;text-decoration:none;letter-spacing:2px;text-transform:uppercase;line-height:1.2;background:linear-gradient(135deg,#26A9E0,#ffffff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.desktop-nav-buttons{display:flex;gap:12px;align-items:center}.btn{display:inline-block;padding:10px 28px;font-size:14px;font-weight:700;text-decoration:none;border-radius:50px;cursor:pointer;transition:all .3s ease;min-height:42px;line-height:1.2;border:none;text-align:center}.btn-login{background-color:#EA7C07;color:#fff;box-shadow:0 4px 12px rgba(234,124,7,.4)}.btn-login:hover{background-color:#d46902;transform:translateY(-2px);box-shadow:0 6px 18px rgba(234,124,7,.5)}.btn-register{background:linear-gradient(135deg,#26A9E0,#1b7fa8);color:#fff;box-shadow:0 4px 12px rgba(38,169,224,.4)}.btn-register:hover{background:linear-gradient(135deg,#1b8fc4,#16628a);transform:translateY(-2px);box-shadow:0 6px 18px rgba(38,169,224,.5)}.main-nav{background:#FFFFFF;width:100%;display:flex;border-top:2px solid #26A9E0}.nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:0 20px;min-height:52px;gap:6px}.nav-container a{color:#333;text-decoration:none;font-size:14px;font-weight:600;padding:10px 15px;border-radius:6px;transition:all .2s ease;position:relative;white-space:nowrap}.nav-container a:hover{color:#26A9E0;background:rgba(38,169,224,.08)}.mobile-nav-buttons{display:none;background:#fff;border-top:1px solid #e0e0e0}.mobile-menu-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.5);z-index:999;opacity:0;visibility:hidden;transition:opacity .3s ease}.hamburger-menu{display:none;background:transparent;border:none;cursor:pointer;width:40px;height:40px;padding:8px;z-index:1001;flex-direction:column;justify-content:space-around}.hamburger-menu span{display:block;width:100%;height:3px;background:#fff;border-radius:2px;transition:all .3s ease}.site-footer{background:#1a2b3c;color:#fff;padding:60px 0 0;margin-top:60px}.footer-container{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;padding:0 30px 40px}.footer-logo{font-size:2rem;font-weight:900;color:#26A9E0;text-decoration:none;letter-spacing:2px;text-transform:uppercase;display:inline-block;margin-bottom:20px}.footer-info p{font-size:14px;color:#b0bec5;line-height:1.8;margin-top:15px}.footer-links h3{font-size:18px;color:#fff;margin-bottom:20px;font-weight:700;padding-bottom:10px;border-bottom:2px solid #26A9E0;display:inline-block}.footer-nav{display:flex;flex-direction:column;gap:12px}.footer-nav a{color:#b0bec5;text-decoration:none;font-size:14px;transition:color .2s ease;padding:4px 0}.footer-nav a:hover{color:#26A9E0}.footer-inline-links{display:flex;flex-wrap:wrap;gap:15px;margin-top:15px}.footer-inline-links a{color:#b0bec5;text-decoration:none;font-size:14px;transition:color .2s ease}.footer-inline-links a:hover{color:#26A9E0}.footer-bottom{background:rgba(0,0,0,.2);padding:20px 0;text-align:center;border-top:1px solid rgba(255,255,255,.1)}.footer-bottom p{color:#90a4ae;font-size:14px}.footer-bottom a{color:#26A9E0;text-decoration:none}.safe-note{color:#e0e0e0;font-size:12px;line-height:1.6;margin-top:20px;opacity:.8}@media (max-width:768px){.header-top{min-height:60px}.header-container{width:100%;max-width:none;padding:0 15px;min-height:60px;display:flex;justify-content:space-between;align-items:center;position:relative}.hamburger-menu{display:flex;order:1;margin-right:auto;color:#fff}.header-container .logo{order:2;position:absolute;left:50%;transform:translateX(-50%);font-size:1.6rem}.desktop-nav-buttons{display:none}.mobile-nav-buttons{display:flex;justify-content:center;gap:10px;padding:10px 15px;background:#1a2b3c;border-top:1px solid rgba(255,255,255,.1)}.mobile-nav-buttons .btn{flex:1;max-width:180px;padding:10px 16px;font-size:13px}.main-nav{display:none;position:fixed;top:0;left:0;width:280px;height:100%;background:#fff;flex-direction:column;justify-content:flex-start;align-items:stretch;transform:translateX(-100%);transition:transform .4s cubic-bezier(.25,.8,.25,1);z-index:1000;border-top:none;box-shadow:2px 0 20px rgba(0,0,0,.15)}.main-nav.active{display:flex;transform:translateX(0)}.nav-container{width:100%;max-width:none;flex-direction:column;justify-content:flex-start;align-items:stretch;padding:20px 0;overflow-y:auto;height:100%}.nav-container a{padding:15px 25px;font-size:15px;border-bottom:1px solid #f0f0f0;white-space:normal;text-align:left}.nav-container a:hover{background:#f5f9fc;color:#26A9E0}.nav-container a:nth-child(1){color:#26A9E0;font-weight:800;border-left:4px solid #26A9E0}.mobile-menu-overlay.active{display:block;opacity:1;visibility:visible}body.no-scroll{overflow:hidden}.hamburger-menu.active{position:fixed;left:15px;top:14px;background:transparent;justify-content:center}.hamburger-menu.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.hamburger-menu.active span:nth-child(2){opacity:0}.hamburger-menu.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}.footer-container{grid-template-columns:1fr;gap:30px;padding:0 15px 30px}.footer-bottom{padding:15px}.page-content img{max-width:100%!important;height:auto!important;display:block}.page-content{overflow-x:hidden;max-width:100%}body{overflow-x:hidden;width:100%}}@media (max-width:480px){.mobile-nav-buttons{flex-direction:row}.btn-login,.btn-register{width:auto;flex:1;max-width:none;padding:10px 12px}.footer-info p{margin:10px 0}}
/* 移动端内容区防溢出（系统追加，请勿删除） */
@media (max-width: 768px) {
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }
  body {
    overflow-x: hidden;
  }
}
/* 内容保护（系统追加，请勿删除） */
body {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
input, textarea, select, [contenteditable="true"] {
  -webkit-user-select: text;
  -moz-user-select: text;
  user-select: text;
}